Expandable polystyrene is mainly made into products with different relative densities and different shapes through different foaming processes. The pre-foamed body can be used as a filter medium for domestic water and as an auxiliary material for lightweight concrete. Its molded foam products can be used as shockproof packaging materials, insulation materials, floating materials, heat insulation materials, sound insulation materials, etc. The expanded polystyrene used for TV packaging alone is more than 15,000 tons per year. The foam sheet can be used as a packaging container, especially disposable tableware. Products with different densities have different uses. Materials with a density of 0.016~0.032g/cm3 account for more than 65% of the expandable polystyrene. They are mainly used as packaging materials and insulation materials; the density is 0 The material of 08~0.32g/cm3 is foam sheet, which is mostly used as food container; the material with density of 0.4~0.8g/cm3 is used to make
furniture, utensils and automobile products. Different types of expandable polystyrene have different properties and uses.